JPH04501692A - Adjustable handlebar stem for bicycles or similar vehicles - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Adjustment of bicycles or similar vehicles Possible handle bar stem [Technical field] This invention is applicable to bicycles, motorcycles, motorized bicycles, or other bicycles. Adjustable handlebar for all steerable devices with steering principle It concerns the stem. In particular, this invention provides lockable simultaneous handlebar height. This is between the front and back position joint adjustment device.

[Background wave fr] To date, bicycles have only been equipped with handlebar stems that can only be adjusted up and down in a straight line. Generally provided. However, various types of specially adjustable handle bars are available. BACKGROUND OF THE INVENTION System devices are well known in the art that can be adapted for a variety of purposes.

Today, handlebar stem manufacturers vary the protruding length of handlebar stems. We manufacture handlebar stems that can be made by sea urchins. Therefore, the handlebars are It can also be placed in positions such as When changing the position of the handlebar, The brake handle itself is rotated in such a way that the brake handle naturally reaches the correct position. Must adjust the handlebar by means of a well-known handlebar stem device Therefore, first loosen the three bolts and then put the handlebar in place. Move it to the key position.

The handlebar must then be re-secured with three bolts, these three The two bolts are used to a) adjust the vertical movement of the bicycle handlebar, and b) allow the bicycle to be ridden. C) Adjust the protrusion of the handlebar in the direction toward or in the opposite direction; Each has a purpose of rotating the bar itself around the main axis of the handlebar.

From Belgian Patent No. 523,31.4, a patent with features in common with the present invention is disclosed. device, i.e. one widget on the support point for adjusting the height of the handlebar. Adjustment using two parallel arms that can be locked in an infinitely variable manner by means of a locking nut. Possible devices are well known. Handlebar movement is downward and forward from the 1st end position; After that, it is lower and rearward with respect to the end position. To guide this parallelogram, The handlebar is oriented in the vertical plane, i.e. around the main axis of the handlebar throughout its entire travel. Maintain rotation direction.

Sometimes changing a passenger's position while driving fails. In other words, like this A simple and substantial device for changing the position of the rider is required on the bicycle.

First of all, it is inconvenient to drive in the open position for a long time. Second, on a bicycle. Even more effective running can be achieved by changing the running posture of the vehicle.

When climbing hills or driving at high speed on flat ground, the handlebars should be in a lower, relatively forward position. It is often noted that it is more effective when it is present. However, good visibility is required When driving in areas with heavy traffic, it is best to sit in a relatively high and upright position. It is often noted that it is suitable.

[Disclosure of invention] In the handlebar stem according to this invention, the handlebar position can be locked. Adjustments are achieved as easily as possible while driving and without the use of tools; There are various possible ways to improve the posture of bicycle riders, which are both technically accurate and healthy and comfortable. that is achieved.

The above objects apply to the use of handlebar stems of the type expressly defined in the claims. Therefore, it is achieved.

In a preferred embodiment of the adjustable handlebar stem according to the invention, the handlebar stem What you can do to change the position of the looper is to follow the upper front curve of the bicycle frame. achieved. The curve ranges from a position above and close to the front of the passenger to a position below and close to the front of the passenger. Extends away from people.

According to the invention, the adjustable handlebar stem loosens one jet-fastening device. I am moved by just that. After changing the handlebar position, the handlebar is attached to the tightening device. is tightened in the new position by relocking. from one position to another Adjustable handlebar steering according to the invention when moving the handlebar to The system uses the handlebar itself to rotate the handlebar.

The present invention is described in the following non-limiting embodiments along with the accompanying drawings. So it will become clearer.

[Brief explanation of the drawing] FIG. 1 is a side view of an embodiment of a handle bar stem according to the present invention; Figure 2 is a diagram showing the movement of the movable members of the handlebar stem in Figure 1; Figure 3 is a diagram showing the handlebar stem in two positions on a bicycle; Figure 4 is a perspective view of the handlebar stem, Figure 5 with locking device for fixed position. A side view showing an embodiment of the handle bar stem according to the present invention, FIG. FIG. 2 is a diagram showing an embodiment with a device;

[The best way to carry out your invention! 9] FIG. 1 shows a handle according to the invention. An embodiment of the par is shown in side view. In this recommended practice, the handlebar - itself is inserted into the bicycle frame pipe 14 (Fig. 3) and tightened. Handlebar 15 installed in front of handlebar stem strut 1 (see Figure 4) 4) is inserted into the hole 5 of the handlebar member 4 in a well-known manner, as shown only in FIG. It is fastened to.

Both ends of the upper arm 2 and the arm 3 are pivoted at support points 6.7.8.9. Therefore, the geometric structure, i.e. the concrete structure, has an external structure that prevents further movement. Move the upper shaped arm 2.2 around the support point 6.7 in two directions until the vertical position is achieved. You can do it as you like. Therefore, the fully movable mechanism is in a fixed position when mounted on the bicycle. It is composed of four members on which the support column 1 is located. Two upper and lower arms 2. 3 are both pivotally supported by the strut 1 and the handlebar 15, so the assembly circumference of the two axes is can be rotated independently from each other.

In the illustrated embodiment, the stud 10 of the protrusion 13 of the upper-shaped arm 2 is a claw-shaped arm. Combined with arm 11 of arm 3, it constitutes a locking device, and there are two upper and lower shaped arms 2.3. They are arranged so that they can be locked together at selected positions between the outer positions of the The lateral position is shown in FIG. Furthermore, before the mechanism in Figure 2 reaches the working position, , it is clear that it is possible to move a small distance downward and forward.

The special features of the handlebar stem according to the invention are as evident from FIG. , the distance a between the two support points 6.7 is equal to the distance a between the support points 8.9 of the handlebar member 4. is not equal to the distance a, and in the preferred embodiment shown, the °C is greater than the distance a. That's a big deal. This allows for the movable member to rotate from one position to the lower position. When the handlebar 15 is tightened in the hole 5, it rotates in the opposite rotation direction. I'm making sure that. This is true for ordinary brakes fixed to the handlebar 15. Create the correct ergonomics when considering the grip of the key handle.

In the upper position, the tilt associated with the upright body posture is shown in Figure 2. It is natural for the brake handle to point at an inclined downward position, but the handlebar - When it is necessary to lower the 15 in the forward direction to take a more effective bicycle posture. , the elbows are lowered at the same time, and the brake handle grip naturally tilts horizontally. I get kicked. The movement of the handlebar stem according to this invention ensures this effect. In FIG. 2, this rotating effect shows that the handlebar 15 is Display that rotates clockwise when lowered by a counterclockwise movement toward the left. It is clearly shown on a trial basis by showing it in a simple way like line 16. Ru.

In addition, by providing an appropriately designed upper and lower shaped arm 2.3, it is easy and effective. For example, a groove 11 is provided in the claw-shaped arm 3, and the illustrated embodiment The protrusion 13 can be integrally fastened to the claw-shaped arm 3 at any position. The stud 10 of the projection 13 of the upper shaped arm 2 provides the possibility of providing a locking device that I can do it.

Providing a simple and effective locking or fastening device that can be operated while riding Of course, this is possible using conventional, well-known techniques. Well known for racing bicycles One example of a well-known locking device, such as a wheel rim quick-fastening mechanism, is The fastening mechanism is easy to use and sufficiently fastened, and the handlebar 15 itself The locking device can be operated from the driver.

Furthermore, apart from the embodiment shown, it is possible to lock in any position between the outer positions. Other different types for integrally fastening two upper and lower shaped arms 2.3 to each other A locking device can be used.

The upper and lower shaped arms can be configured in different types of designs and support points 6.7.8 ．． 9 can be arranged differently in relation to each other, for the handlebar 15. A suitable displacement curve 12 (see FIG. 2) is achieved. Place the support points appropriately. While moving, the handle par 15 swings and the handle par 15 rotates. It can be changed to As mentioned earlier, when configuring the stem, the movement of the support point and The change is achieved by increasing the spacing between each other.

Therefore, the optimal and useful mold configuration is to adjust the upper support point spacing C (see Figure 1) to the corresponding lower support. This is achieved by making the dot spacing narrower than the dot spacing d. By this, the upper and lower shape a The movement of the arm or handlebar member is substantially above a horizontal plane passing through the support point 7. Accomplished by being done at a distance.

Based on ergonomic considerations, when the handlebar moves downwards, it cannot move backwards again. is inappropriate, so the support point spacing and remaining material design are Preferably, the horizontal position simultaneously constitutes the maximum forward protrusion position of the handlebar. To be elected.

Furthermore, in the recommended embodiment, the configuration of the four parts described above is Since the arm 2.3 is directly pivoted to the handlebar member 4, the handlebar A movable mechanism composed of a member 4, an upper and lower arm 2.3, and a column 1 is a well-known mechanism. Indicates another clamping around another column in a parallelogram guiding device at both ends. It forms an integral and robust device compared to the closest known solution. It should be noted that it has special features. Therefore, this invention A configuration similar to that shown in Figure 1 has significant advantages when considering structural strength.

As previously mentioned, various types of locking devices can be used. Figure 5 shows the fixed Possibilities of fixed locking positions are shown.

In this case, the lower shaped arm 3 is provided with a recessed groove 17 at the top. Hollow groove 1 7 has a substantially wedge-shaped or conical shape, and the bottom of each recessed groove 17 is bent under the arm 3. A narrow hole 18 is drilled at right angles on the underside of the wire for final modification of the wire. A pull wire 19 with a section ball 20 extends therethrough.

The upper-shaped arm 2 has an inner hole 21 facing downward, and has a slidable plan. A jar 22 is provided.

This plunger 22 has a sharply pointed lower end 23 having a shape corresponding to the shape of the recessed groove 17. , so that the lower end 23 fits tightly into one of the recessed grooves 17. I can do it.

In addition, a strong helical spring 24 provided in the inner hole 21 causes the plunger 22 to become depressed. 7 and push it downward so that it firmly engages.

a conical or wedge-shaped lower end for lifting plunger 22 to change position; 23 is provided with a hole 25 of the same diameter that is aligned with hole 18, and this hole 25 is The plunger 22 is positioned such that a shoulder is formed in which the end ball 20 of the ear engages. Somewhere inside the lower end 23 there is a narrow (1. cable or wire 1) The portion of the hole that follows above has a diameter that allows only one hole to pass through the hole. One wire is It extends upwardly through the center of the plunger 23 and the hole 21, and further includes a bowden cave. The center wire of the upper arm 2 extends through the nipple 26 at the top of the upper shaped arm 2. .

By pulling the handle (not shown) on the other end of the Bowden cable, The jaw 22 resists the spring force of the helical spring 24, comes off the problematic groove 17, and moves upward. It can be lifted. The plunger 22 is clearly held from the top of the lower shaped arm 3. If the Bowden cable is released before reaching the desired position when ), the bicycle quickly moves the handlebar 15 (Figure 4) to one of the other fixed positions. Then, slide the plunger 22 on the top of the lower shaped arm 3 until it reaches the maximum position according to the operation. It can be applied downward into the nearby depression 17.

As shown in Fig. 5, the handle bar stem support 1 is connected to the front wheel brake wire. A hole 27 for passing through can be provided as appropriate.

Hunt for an effective spring action that becomes especially interesting when driving on very rough surfaces In order to achieve further effects such as providing the support 1 for the lever stem, a fixed locking device is installed. The lower shaped arm 3 in the above-described embodiment with a A member 28 or 29 of flexible material can be provided (see FIG. 6).

In FIG. 6, an embodiment is shown in which only the lower shaped arm 3 has three recessed edges 17. has been done. A small hatched member 28 surrounding the groove 17 is made of hard rubber. One possibility is that it can be used in a system. The fixing screw is designated by 30; Member 29 of the entire internal central part of the lower shaped arm 3 (inside the strong outer metal frame) can be removed. In practice, when using elastic materials, a certain degree of wear is encountered. Therefore, the central member 29 must be replaced after a certain amount of use.

If possible, the entire center part member 29 (the inside (fil) of the strong outer metal frame) should be made of hard material. It can be made from quality rubber and can be removed in the same manner as described above.

Preferably, the plunger 22 is removed in a similar manner from the top side of the upper shaped arm 2. For example, the entire hole can be removed from the top side by screwing. Removal of the recessed edge of the lower shaped arm 3 in connection with the embodiment using an elastic material In the embodiment using the material, that is, the central part of the lower shaped arm 3 having the recessed groove 17 is It is available in a removable manner.

Submission of translation of written amendment (Article 184-7, Paragraph 1 of the Patent Law) March 20, 1991

Claims (1)

[Claims] 1. A support that can be placed inside the bicycle's front frame pipe (14) and fastened to it. (1), said strut having two first struts at the top and at a predetermined spaced lower side; Parallel support axes whose holding points (6, 7) are horizontal when the bicycle is normally upright The support points (6, 7) are arranged so that one of the support points (6, 7) is attached to the upper shaped arm (2). ), the other one is the lower shape arm (3), and the other one is the lower shape arm (3). The upper and lower shaped arms (2, 3) at the ends of the column (1) support the support points (6, 7). The handle is secured by upper and lower second support points (8, 9) with axes parallel to the axis. The handlebar member (4) is pivotably supported on a bar member (4), and the handlebar member (4) is A horizontal hole (5) is provided for inserting and tightening the wheel handlebar (15). In adjustable handlebar stems for bicycles and similar vehicles, The spacing (b) between the two second support points (8, 9) is equal to the distance between the two first support points (6, 7) spacing (a) between the handlebar member (4) and the hole (5), thereby ) with respect to the handlebar (15) around the axis of the vertically shaped arms (2, 3). ) upper and lower shapes around support points (6, 7, 8, 9) between two outer positions for movement of The arms (2, 3) can be changed when rotating, between the outer positions or said outer positions. Two upper and lower arms (2, 3) are attached to the upper and lower arms (2, 3) at positions equal to A locking device capable of locking 2 and 3) together; A handlebar stem characterized by being equipped with. 2. The spacing (b) is narrower than the spacing (a) and the two second support points (8, 9) are It is characterized by being placed in front of the two first support points when viewed from the direction of The handlebar stem according to claim 1. 3. Upper support between the support point (6) above the two first support points and the support point (8) above the second support point The distance between the holding points (c) is between the supporting point (7) below the two first supporting points and the supporting point below the second supporting point. The spacing between the points (9) and the lower support points (d) is narrower than that, thereby making the upper and lower shaped arms (2, 3), eventually the movement of the handlebar member (4) is below the two first support points. characterized in that it is achieved as actually done above the horizontal plane passing through the support point (7). The handlebar stem according to claim 2. 4. One of the two vertically shaped arms (2, 3), other than the vertically shaped arm (2, 3) groove (11) for sliding guidance in cooperation with the stud (10) of the protrusion (13) on the other side; is provided, said stud (10) being lockable in any position within the groove (11); The projection (13) is characterized in that it has a stud (10) provided with a locking device. The handlebar stem according to any one of claims 1, 2, and 3, characterized in that: 5. The locking device, groove (11), stud (10) and protrusion (13) are The locking device combined with the stud (10) can be quickly removed and tightened. The handlebar according to claim 4, characterized in that the handlebar is constituted by a mounting device. stem. 6. The lower shaped arm (3) is pressed by a spring in the hole (21) of the upper shaped arm (2). a plurality of, for example five, wedge-shaped or A conical groove (17) is provided at the top, and the aranjar (22) is provided at the bottom end. (23) has a shape corresponding to the shape of the recessed groove (17), and the plunger (22) ) and the tension wire (1) against the force of the spring (24) provided in the hole (22). 9), the plunger (22) and groove (17) can be lifted up. A locking device is configured to provide locking action at multiple fixed positions. A handlebar stem according to any one of claims 1, 2, and 3. 7. The members (28, 29) of the lower shaped arm (3) with the recessed groove (17) are somewhat It is characterized by being made from a relatively hard elastic material such as hard rubber to obtain elastic action. The handlebar stem according to claim 6. 8. The locking device can be operated by the handle on the handlebar (15) The handlebar stem according to any one of claims 1 to 7, characterized by: . 9. The lower outer position for moving the upper and lower shaped arms (2, 3) is the handlebar (15). ) The geometrical or material design is selected in such a way as to simultaneously configure the maximum forward protrusion position of The handle according to any one of claims 1 to 8, characterized in that dollar bar stem. 10. The vertical arms (2, 3) are directly pivoted to the handlebar member (4). Therefore, the handlebar member (4), the upper and lower arms (23), and the strut (1) are integrated. The invention according to any one of claims 1 to 9, characterized in that it has a structure. Handlebar stem included.